3 * Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
4 * 2006, 2007, 2008 by Larry Wall and others
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
14 =head1 Per-Interpreter Variables
17 /* These variables are per-interpreter in threaded/multiplicity builds,
20 * Don't forget to re-run regen/embed.pl to propagate changes! */
22 /* New variables must be added to the very end for binary compatibility. */
24 /* Don't forget to add your variable also to perl_clone()! (in sv.c) */
26 /* The 'I' prefix is only needed for vars that need appropriate #defines
27 * generated when built with or without MULTIPLICITY. It is also used
28 * to generate the appropriate export list for win32. If the variable
29 * needs to be initialized, use PERLVARI.
31 * When building without MULTIPLICITY, these variables will be truly global.
33 * Important ones in the first cache line (if alignment is done right) */
35 PERLVAR(I, stack_sp, SV **) /* top of the stack */
36 PERLVAR(I, op, OP *) /* currently executing op */
37 PERLVAR(I, curpad, SV **) /* active pad (lexicals+tmps) */
39 PERLVAR(I, stack_base, SV **)
40 PERLVAR(I, stack_max, SV **)
42 PERLVAR(I, savestack, ANY *) /* items that need to be restored when
43 LEAVEing scopes we've ENTERed */
44 PERLVAR(I, savestack_ix, I32)
45 PERLVAR(I, savestack_max, I32)
47 PERLVAR(I, scopestack, I32 *) /* scopes we've ENTERed */
48 PERLVAR(I, scopestack_ix, I32)
49 PERLVAR(I, scopestack_max, I32)
51 PERLVAR(I, tmps_stack, SV **) /* mortals we've made */
52 PERLVARI(I, tmps_ix, SSize_t, -1)
53 PERLVARI(I, tmps_floor, SSize_t, -1)
54 PERLVAR(I, tmps_max, SSize_t) /* first unalloced slot in tmps stack */
56 PERLVARI(I, sub_generation, U32, 1) /* incr to invalidate method cache */
58 PERLVAR(I, markstack, I32 *) /* stack_sp locations we're
60 PERLVAR(I, markstack_ptr, I32 *)
61 PERLVAR(I, markstack_max, I32 *)
63 #ifdef PERL_HASH_RANDOMIZE_KEYS
64 #ifdef USE_PERL_PERTURB_KEYS
65 PERLVARI(I, hash_rand_bits_enabled, U8, 1) /* used to randomize hash stuff 0 == no-random, 1 == random, 2 == determinsitic */
67 PERLVARI(I, hash_rand_bits, UV, 0) /* used to randomize hash stuff */
69 PERLVAR(I, strtab, HV *) /* shared string table */
70 /* prog counter for the currently executing OP_MULTIDEREF Used to signal
71 * to S_find_uninit_var() where we are */
72 PERLVAR(I, multideref_pc, UNOP_AUX_item *)
74 /* Fields used by magic variables such as $@, $/ and so on */
75 PERLVAR(I, curpm, PMOP *) /* what to do \ interps in REs from */
76 PERLVAR(I, curpm_under, PMOP *) /* what to do \ interps in REs from */
78 PERLVAR(I, tainting, bool) /* doing taint checks */
79 PERLVARI(I, tainted, bool, FALSE) /* using variables controlled by $< */
81 /* PL_delaymagic is currently used for two purposes: to assure simultaneous
82 * updates in ($<,$>) = ..., and to assure atomic update in push/unshift
83 * @ISA, It works like this: a few places such as pp_push set the DM_DELAY
84 * flag; then various places such as av_store() skip mg_set(ary) if this
85 * flag is set, and various magic vtable methods set flags like
86 * DM_ARRAY_ISA if they've seen something of that ilk. Finally when
87 * control returns to pp_push or whatever, it sees if any of those flags
88 * have been set, and if so finally calls mg_set().
90 * NB: PL_delaymagic is automatically saved and restored by JUMPENV_PUSH
91 * / POP. This removes the need to do ENTER/SAVEI16(PL_delaymagic)/LEAVE
92 * in hot code like pp_push.
94 PERLVAR(I, delaymagic, U16) /* ($<,$>) = ... */
96 PERLVAR(I, localizing, U8) /* are we processing a local() list? */
97 PERLVAR(I, in_eval, U8) /* trap "fatal" errors? */
98 PERLVAR(I, defgv, GV *) /* the *_ glob */
101 =for apidoc mn|U8|PL_dowarn
103 The C variable that roughly corresponds to Perl's C<$^W> warning variable.
104 However, C<$^W> is treated as a boolean, whereas C<PL_dowarn> is a
105 collection of flag bits.
110 PERLVAR(I, dowarn, U8)
112 #if defined (PERL_UTF8_CACHE_ASSERT) || defined (DEBUGGING)
117 PERLVARI(I, utf8cache, I8, PERL___I) /* Is the utf8 caching code enabled? */
122 PERLVAR(I, defstash, HV *) /* main symbol table */
123 PERLVAR(I, curstash, HV *) /* symbol table for current package */
125 PERLVAR(I, curcop, COP *)
126 PERLVAR(I, curstack, AV *) /* THE STACK */
127 PERLVAR(I, curstackinfo, PERL_SI *) /* current stack + context */
128 PERLVAR(I, mainstack, AV *) /* the stack when nothing funny is
131 /* memory management */
132 PERLVAR(I, sv_count, IV) /* how many SV* are currently allocated */
134 PERLVAR(I, sv_root, SV *) /* storage for SVs belonging to interp */
135 PERLVAR(I, sv_arenaroot, SV *) /* list of areas for garbage collection */
137 /* fake PMOP that PL_curpm points to while in (?{}) so $1 et al are visible */
138 PERLVARI(I, reg_curpm, PMOP*, NULL)
140 /* the currently active slab in a chain of slabs of regmatch states,
141 * and the currently active state within that slab. This stack of states
142 * is shared amongst re-entrant calls to the regex engine */
144 PERLVARI(I, regmatch_slab, regmatch_slab *, NULL)
145 PERLVAR(I, regmatch_state, regmatch_state *)
147 PERLVAR(I, comppad, PAD *) /* storage for lexically scoped temporaries */
150 =for apidoc Amn|SV|PL_sv_undef
151 This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>.
153 =for apidoc Amn|SV|PL_sv_no
154 This is the C<false> SV. See C<L</PL_sv_yes>>. Always refer to this as
157 =for apidoc Amn|SV|PL_sv_yes
158 This is the C<true> SV. See C<L</PL_sv_no>>. Always refer to this as
161 =for apidoc Amn|SV|PL_sv_zero
162 This readonly SV has a zero numeric value and a C<"0"> string value. It's
163 similar to C<L</PL_sv_no>> except for its string value. Can be used as a
164 cheap alternative to C<mXPUSHi(0)> for example. Always refer to this as
165 C<&PL_sv_zero>. Introduced in 5.28.
171 PERLVAR(I, sv_yes, SV)
172 PERLVAR(I, sv_undef, SV)
173 PERLVAR(I, sv_no, SV)
174 PERLVAR(I, sv_zero, SV)
176 /* store the immortals as an array to ensure they are contiguous in
177 * memory: makes SvIMMORTAL_INTERP(sv) possible */
178 PERLVARA(I, sv_immortals, 4, SV)
181 PERLVAR(I, padname_undef, PADNAME)
182 PERLVAR(I, padname_const, PADNAME)
183 PERLVAR(I, Sv, SV *) /* used to hold temporary values */
185 PERLVAR(I, parser, yy_parser *) /* current parser state */
187 PERLVAR(I, stashcache, HV *) /* Cache to speed up S_method_common */
191 =for apidoc Amn|STRLEN|PL_na
193 A convenience variable which is typically used with C<SvPV> when one
194 doesn't care about the length of the string. It is usually more efficient
195 to either declare a local variable and use that instead or to use the
201 PERLVAR(I, na, STRLEN) /* for use in SvPV when length is
205 PERLVAR(I, statcache, Stat_t) /* _ */
206 PERLVAR(I, statgv, GV *)
207 PERLVARI(I, statname, SV *, NULL)
210 =for apidoc mn|SV*|PL_rs
212 The input record separator - C<$/> in Perl space.
214 =for apidoc mn|GV*|PL_last_in_gv
216 The GV which was last used for a filehandle input operation. (C<< <FH> >>)
218 =for apidoc mn|GV*|PL_ofsgv
220 The glob containing the output field separator - C<*,> in Perl space.
225 PERLVAR(I, rs, SV *) /* input record separator $/ */
226 PERLVAR(I, last_in_gv, GV *) /* GV used in last <FH> */
227 PERLVAR(I, ofsgv, GV *) /* GV of output field separator *, */
228 PERLVAR(I, defoutgv, GV *) /* default FH for output */
229 PERLVARI(I, chopset, const char *, " \n-") /* $: */
230 PERLVAR(I, formtarget, SV *)
231 PERLVAR(I, bodytarget, SV *)
232 PERLVAR(I, toptarget, SV *)
235 PERLVAR(I, restartop, OP *) /* propagating an error from croak? */
236 PERLVAR(I, restartjmpenv, JMPENV *) /* target frame for longjmp in die */
238 PERLVAR(I, top_env, JMPENV *) /* ptr to current sigjmp environment */
239 PERLVAR(I, start_env, JMPENV) /* empty startup sigjmp environment */
240 PERLVARI(I, errors, SV *, NULL) /* outstanding queued errors */
242 /* statics "owned" by various functions */
243 PERLVAR(I, hv_fetch_ent_mh, HE*) /* owned by hv_fetch_ent() */
245 PERLVAR(I, lastgotoprobe, OP*) /* from pp_ctl.c */
248 PERLVAR(I, sortcop, OP *) /* user defined sort routine */
249 PERLVAR(I, sortstash, HV *) /* which is in some package or other */
250 PERLVAR(I, firstgv, GV *) /* $a */
251 PERLVAR(I, secondgv, GV *) /* $b */
254 PERLVAR(I, efloatbuf, char *)
255 PERLVAR(I, efloatsize, STRLEN)
257 PERLVARI(I, dumpindent, U16, 4) /* number of blanks per dump
260 PERLVAR(I, exit_flags, U8) /* was exit() unexpected, etc. */
262 PERLVAR(I, utf8locale, bool) /* utf8 locale detected */
263 PERLVAR(I, in_utf8_CTYPE_locale, bool)
264 PERLVAR(I, in_utf8_COLLATE_locale, bool)
265 #ifdef USE_LOCALE_CTYPE
266 PERLVAR(I, warn_locale, SV *)
269 PERLVARA(I, colors,6, char *) /* values from PERL_RE_COLORS env var */
272 =for apidoc Amn|peep_t|PL_peepp
274 Pointer to the per-subroutine peephole optimiser. This is a function
275 that gets called at the end of compilation of a Perl subroutine (or
276 equivalently independent piece of Perl code) to perform fixups of
277 some ops and to perform small-scale optimisations. The function is
278 called once for each subroutine that is compiled, and is passed, as sole
279 parameter, a pointer to the op that is the entry point to the subroutine.
280 It modifies the op tree in place.
282 The peephole optimiser should never be completely replaced. Rather,
283 add code to it by wrapping the existing optimiser. The basic way to do
284 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
285 If the new code wishes to operate on ops throughout the subroutine's
286 structure, rather than just at the top level, it is likely to be more
287 convenient to wrap the L</PL_rpeepp> hook.
292 PERLVARI(I, peepp, peep_t, Perl_peep)
295 =for apidoc Amn|peep_t|PL_rpeepp
297 Pointer to the recursive peephole optimiser. This is a function
298 that gets called at the end of compilation of a Perl subroutine (or
299 equivalently independent piece of Perl code) to perform fixups of some
300 ops and to perform small-scale optimisations. The function is called
301 once for each chain of ops linked through their C<op_next> fields;
302 it is recursively called to handle each side chain. It is passed, as
303 sole parameter, a pointer to the op that is at the head of the chain.
304 It modifies the op tree in place.
306 The peephole optimiser should never be completely replaced. Rather,
307 add code to it by wrapping the existing optimiser. The basic way to do
308 this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
309 If the new code wishes to operate only on ops at a subroutine's top level,
310 rather than throughout the structure, it is likely to be more convenient
311 to wrap the L</PL_peepp> hook.
316 PERLVARI(I, rpeepp, peep_t, Perl_rpeep)
319 =for apidoc Amn|Perl_ophook_t|PL_opfreehook
321 When non-C<NULL>, the function pointed by this variable will be called each time an OP is freed with the corresponding OP as the argument.
322 This allows extensions to free any extra attribute they have locally attached to an OP.
323 It is also assured to first fire for the parent OP and then for its kids.
325 When you replace this variable, it is considered a good practice to store the possibly previously installed hook and that you recall it inside your own.
330 PERLVARI(I, opfreehook, Perl_ophook_t, 0) /* op_free() hook */
332 PERLVARI(I, watchaddr, char **, 0)
333 PERLVAR(I, watchok, char *)
335 PERLVAR(I, perldb, U32)
337 PERLVAR(I, signals, U32) /* Using which pre-5.8 signals */
339 PERLVAR(I, reentrant_retint, int) /* Integer return value from reentrant functions */
341 /* pseudo environmental stuff */
342 PERLVAR(I, origargc, int)
343 PERLVAR(I, origargv, char **)
344 PERLVAR(I, envgv, GV *)
345 PERLVAR(I, incgv, GV *)
346 PERLVAR(I, hintgv, GV *)
347 PERLVAR(I, origfilename, char *)
348 PERLVARI(I, xsubfilename, const char *, NULL)
349 PERLVAR(I, diehook, SV *)
350 PERLVAR(I, warnhook, SV *)
353 PERLVAR(I, patchlevel, SV *)
354 PERLVAR(I, localpatches, const char * const *)
355 PERLVARI(I, splitstr, const char *, " ")
357 PERLVAR(I, minus_c, bool)
358 PERLVAR(I, minus_n, bool)
359 PERLVAR(I, minus_p, bool)
360 PERLVAR(I, minus_l, bool)
361 PERLVAR(I, minus_a, bool)
362 PERLVAR(I, minus_F, bool)
363 PERLVAR(I, doswitches, bool)
364 PERLVAR(I, minus_E, bool)
366 PERLVAR(I, inplace, char *)
367 PERLVAR(I, e_script, SV *)
369 PERLVAR(I, basetime, Time_t) /* $^T */
371 PERLVARI(I, maxsysfd, I32, MAXSYSFD)
372 /* top fd to pass to subprocesses */
373 PERLVAR(I, statusvalue, I32) /* $? */
375 PERLVAR(I, statusvalue_vms, U32)
377 PERLVAR(I, statusvalue_posix, I32)
380 PERLVARI(I, sig_pending, int, 0) /* Number if highest signal pending */
381 PERLVAR(I, psig_pend, int *) /* per-signal "count" of pending */
383 /* shortcuts to various I/O objects */
384 PERLVAR(I, stdingv, GV *) /* *STDIN */
385 PERLVAR(I, stderrgv, GV *) /* *STDERR */
386 PERLVAR(I, argvgv, GV *) /* *ARGV */
387 PERLVAR(I, argvoutgv, GV *) /* *ARGVOUT */
388 PERLVAR(I, argvout_stack, AV *)
390 /* shortcuts to regexp stuff */
391 PERLVAR(I, replgv, GV *) /* *^R */
393 /* shortcuts to misc objects */
394 PERLVAR(I, errgv, GV *) /* *@ */
396 /* shortcuts to debugging objects */
397 PERLVAR(I, DBgv, GV *) /* *DB::DB */
398 PERLVAR(I, DBline, GV *) /* *DB::line */
401 =for apidoc mn|GV *|PL_DBsub
402 When Perl is run in debugging mode, with the B<-d> switch, this GV contains
403 the SV which holds the name of the sub being debugged. This is the C
404 variable which corresponds to Perl's $DB::sub variable. See
407 =for apidoc mn|SV *|PL_DBsingle
408 When Perl is run in debugging mode, with the B<-d> switch, this SV is a
409 boolean which indicates whether subs are being single-stepped.
410 Single-stepping is automatically turned on after every step. This is the C
411 variable which corresponds to Perl's $DB::single variable. See
414 =for apidoc mn|SV *|PL_DBtrace
415 Trace variable used when Perl is run in debugging mode, with the B<-d>
416 switch. This is the C variable which corresponds to Perl's $DB::trace
417 variable. See C<L</PL_DBsingle>>.
422 PERLVAR(I, DBsub, GV *) /* *DB::sub */
423 PERLVAR(I, DBsingle, SV *) /* $DB::single */
424 PERLVAR(I, DBtrace, SV *) /* $DB::trace */
425 PERLVAR(I, DBsignal, SV *) /* $DB::signal */
426 PERLVAR(I, dbargs, AV *) /* args to call listed by caller function */
428 PERLVARA(I, DBcontrol, DBVARMG_COUNT, IV) /* IV versions of $DB::single, trace, signal */
431 PERLVAR(I, debstash, HV *) /* symbol table for perldb package */
432 PERLVAR(I, globalstash, HV *) /* global keyword overrides imported here */
433 PERLVAR(I, curstname, SV *) /* name of current package */
434 PERLVAR(I, beginav, AV *) /* names of BEGIN subroutines */
435 PERLVAR(I, endav, AV *) /* names of END subroutines */
436 PERLVAR(I, unitcheckav, AV *) /* names of UNITCHECK subroutines */
437 PERLVAR(I, checkav, AV *) /* names of CHECK subroutines */
438 PERLVAR(I, initav, AV *) /* names of INIT subroutines */
440 /* subprocess state */
441 PERLVAR(I, fdpid, AV *) /* keep fd-to-pid mappings for my_popen */
444 PERLVARI(I, op_mask, char *, NULL) /* masked operations for safe evals */
446 /* current interpreter roots */
447 PERLVAR(I, main_cv, CV *)
448 PERLVAR(I, main_root, OP *)
449 PERLVAR(I, main_start, OP *)
450 PERLVAR(I, eval_root, OP *)
451 PERLVAR(I, eval_start, OP *)
453 /* runtime control stuff */
454 PERLVARI(I, curcopdb, COP *, NULL)
456 PERLVAR(I, filemode, int) /* so nextargv() can preserve mode */
457 PERLVAR(I, lastfd, int) /* what to preserve mode on */
458 PERLVAR(I, oldname, char *) /* what to preserve mode on */
459 /* Elements in this array have ';' appended and are injected as a single line
460 into the tokeniser. You can't put any (literal) newlines into any program
461 you stuff in into this array, as the point where it's injected is expecting
462 a single physical line. */
463 PERLVAR(I, preambleav, AV *)
464 PERLVAR(I, mess_sv, SV *)
465 PERLVAR(I, ors_sv, SV *) /* output record separator $\ */
467 /* funky return mechanisms */
468 PERLVAR(I, forkprocess, int) /* so do_open |- can return proc# */
470 /* statics moved here for shared library purposes */
471 PERLVARI(I, gensym, I32, 0) /* next symbol for getsym() to define */
472 PERLVARI(I, cv_has_eval, bool, FALSE) /* PL_compcv includes an entereval or similar */
473 PERLVAR(I, taint_warn, bool) /* taint warns instead of dying */
474 PERLVARI(I, laststype, U16, OP_STAT)
476 PERLVARI(I, laststatval, int, -1)
478 PERLVAR(I, modcount, I32) /* how much op_lvalue()ification in
481 /* interpreter atexit processing */
482 PERLVARI(I, exitlistlen, I32, 0) /* length of same */
483 PERLVARI(I, exitlist, PerlExitListEntry *, NULL)
484 /* list of exit functions */
487 =for apidoc Amn|HV*|PL_modglobal
489 C<PL_modglobal> is a general purpose, interpreter global HV for use by
490 extensions that need to keep information on a per-interpreter basis.
491 In a pinch, it can also be used as a symbol table for extensions
492 to share data among each other. It is a good idea to use keys
493 prefixed by the package name of the extension that owns the data.
498 PERLVAR(I, modglobal, HV *) /* per-interp module data */
500 /* these used to be in global before 5.004_68 */
501 PERLVARI(I, profiledata, U32 *, NULL) /* table of ops, counts */
503 PERLVAR(I, compiling, COP) /* compiling/done executing marker */
505 PERLVAR(I, compcv, CV *) /* currently compiling subroutine */
506 PERLVAR(I, comppad_name, PADNAMELIST *) /* variable names for "my" variables */
507 PERLVAR(I, comppad_name_fill, PADOFFSET)/* last "introduced" variable offset */
508 PERLVAR(I, comppad_name_floor, PADOFFSET)/* start of vars in innermost block */
510 #ifdef HAVE_INTERP_INTERN
511 PERLVAR(I, sys_intern, struct interp_intern)
512 /* platform internals */
515 /* more statics moved here */
516 PERLVAR(I, DBcv, CV *) /* from perl.c */
517 PERLVARI(I, generation, int, 100) /* scan sequence# for OP_AASSIGN
518 compile-time common elem detection */
520 PERLVAR(I, unicode, U32) /* Unicode features: $ENV{PERL_UNICODE} or -C */
522 PERLVARI(I, in_clean_objs,bool, FALSE) /* from sv.c */
523 PERLVARI(I, in_clean_all, bool, FALSE) /* ptrs to freed SVs now legal */
524 PERLVAR(I, nomemok, bool) /* let malloc context handle nomem */
525 PERLVARI(I, savebegin, bool, FALSE) /* save BEGINs for compiler */
528 PERLVAR(I, delaymagic_uid, Uid_t) /* current real user id, only for delaymagic */
529 PERLVAR(I, delaymagic_euid, Uid_t) /* current effective user id, only for delaymagic */
530 PERLVAR(I, delaymagic_gid, Gid_t) /* current real group id, only for delaymagic */
531 PERLVAR(I, delaymagic_egid, Gid_t) /* current effective group id, only for delaymagic */
532 PERLVARI(I, an, U32, 0) /* malloc sequence number */
534 /* Perl_Ibreakable_sub_generation_ptr was too long for VMS, hence "gen" */
535 PERLVARI(I, breakable_sub_gen, U32, 0)
538 /* exercise wrap-around */
539 #define PERL_COP_SEQMAX (U32_MAX-50)
541 #define PERL_COP_SEQMAX 0
543 PERLVARI(I, cop_seqmax, U32, PERL_COP_SEQMAX) /* statement sequence number */
544 #undef PERL_COP_SEQMAX
546 PERLVARI(I, evalseq, U32, 0) /* eval sequence number */
547 PERLVAR(I, origalen, U32)
548 PERLVAR(I, origenviron, char **)
549 #ifdef PERL_USES_PL_PIDSTATUS
550 PERLVAR(I, pidstatus, HV *) /* pid-to-status mappings for waitpid */
552 PERLVAR(I, osname, char *) /* operating system */
554 PERLVAR(I, sighandlerp, Sighandler_t)
556 PERLVARA(I, body_roots, PERL_ARENA_ROOTS_SIZE, void*) /* array of body roots */
558 PERLVAR(I, debug, volatile U32) /* flags given to -D switch */
560 PERLVARI(I, padlist_generation, U32, 1) /* id to identify padlist clones */
562 PERLVARI(I, runops, runops_proc_t, RUNOPS_DEFAULT)
564 PERLVAR(I, subname, SV *) /* name of current subroutine */
566 PERLVAR(I, subline, I32) /* line this subroutine began on */
567 PERLVAR(I, min_intro_pending, PADOFFSET)/* start of vars to introduce */
569 PERLVAR(I, max_intro_pending, PADOFFSET)/* end of vars to introduce */
570 PERLVAR(I, padix, PADOFFSET) /* lowest unused index - 1
571 in current "register" pad */
572 PERLVAR(I, constpadix, PADOFFSET) /* lowest unused for constants */
574 PERLVAR(I, padix_floor, PADOFFSET) /* how low may inner block reset padix */
576 #ifdef USE_LOCALE_COLLATE
577 PERLVAR(I, collation_name, char *) /* Name of current collation */
578 PERLVAR(I, collxfrm_base, Size_t) /* Basic overhead in *xfrm() */
579 PERLVARI(I, collxfrm_mult,Size_t, 2) /* Expansion factor in *xfrm() */
580 PERLVARI(I, collation_ix, U32, 0) /* Collation generation index */
581 PERLVARI(I, strxfrm_NUL_replacement, U8, 0) /* Code point to replace NULs */
582 PERLVARI(I, strxfrm_is_behaved, bool, TRUE)
583 /* Assume until proven otherwise that it works */
584 PERLVARI(I, strxfrm_max_cp, U8, 0) /* Highest collating cp in locale */
585 PERLVARI(I, collation_standard, bool, TRUE)
586 /* Assume simple collation */
587 #endif /* USE_LOCALE_COLLATE */
589 PERLVARI(I, langinfo_buf, char *, NULL)
590 PERLVARI(I, langinfo_bufsize, Size_t, 0)
592 #ifdef PERL_SAWAMPERSAND
593 PERLVAR(I, sawampersand, U8) /* must save all match strings */
596 PERLVAR(I, unsafe, bool)
597 PERLVAR(I, colorset, bool) /* PERL_RE_COLORS env var is in use */
599 /* current phase the interpreter is in
600 for ordering this structure to remove holes, we're assuming that this is 4
602 PERLVARI(I, phase, enum perl_phase, PERL_PHASE_CONSTRUCT)
604 PERLVARI(I, in_load_module, bool, FALSE) /* to prevent recursions in PerlIO_find_layer */
606 /* This value may be set when embedding for full cleanup */
607 /* 0=none, 1=full, 2=full with checks */
608 /* mod_perl is special, and also assigns a meaning -1 */
609 PERLVARI(I, perl_destruct_level, signed char, 0)
611 #ifdef USE_LOCALE_NUMERIC
613 PERLVARI(I, numeric_standard, int, TRUE)
614 /* Assume C locale numerics */
615 PERLVARI(I, numeric_underlying, bool, TRUE)
616 /* Assume underlying locale numerics */
617 PERLVAR(I, numeric_name, char *) /* Name of current numeric locale */
618 PERLVAR(I, numeric_radix_sv, SV *) /* The radix separator if not '.' */
620 #endif /* !USE_LOCALE_NUMERIC */
622 /* Unicode inversion lists */
623 PERLVAR(I, Latin1, SV *)
624 PERLVAR(I, UpperLatin1, SV *) /* Code points 128 - 255 */
625 PERLVAR(I, AboveLatin1, SV *)
626 PERLVAR(I, InBitmap, SV *)
628 PERLVAR(I, NonL1NonFinalFold, SV *)
629 PERLVAR(I, HasMultiCharFold, SV *)
631 /* utf8 character class swashes */
632 PERLVAR(I, utf8_mark, SV *)
633 PERLVAR(I, utf8_toupper, SV *)
634 PERLVAR(I, utf8_totitle, SV *)
635 PERLVAR(I, utf8_tolower, SV *)
636 PERLVAR(I, utf8_tofold, SV *)
637 PERLVAR(I, utf8_charname_begin, SV *)
638 PERLVAR(I, utf8_charname_continue, SV *)
640 PERLVARA(I, utf8_swash_ptrs, POSIX_SWASH_COUNT, SV *)
641 PERLVARA(I, XPosix_ptrs, POSIX_CC_COUNT, SV *)
642 PERLVAR(I, GCB_invlist, SV *)
643 PERLVAR(I, LB_invlist, SV *)
644 PERLVAR(I, SB_invlist, SV *)
645 PERLVAR(I, SCX_invlist, SV *)
646 PERLVAR(I, WB_invlist, SV *)
647 PERLVAR(I, Assigned_invlist, SV *)
648 PERLVAR(I, seen_deprecated_macro, HV *)
650 PERLVAR(I, last_swash_hv, HV *)
651 PERLVAR(I, last_swash_tmps, U8 *)
652 PERLVAR(I, last_swash_slen, STRLEN)
653 PERLVARA(I, last_swash_key,UTF8_MAXBYTES-1, U8)
654 PERLVAR(I, last_swash_klen, U8) /* Only needs to store 0-12 */
657 PERLVARI(I, cryptseen, bool, FALSE) /* has fast crypt() been initialized? */
659 /* One byte hole in the interpreter structure. */
662 PERLVAR(I, pad_reset_pending, bool) /* reset pad on next attempted alloc */
663 PERLVAR(I, srand_called, bool)
665 /* Array of signal handlers, indexed by signal number, through which the C
666 signal handler dispatches. */
667 PERLVAR(I, psig_ptr, SV **)
668 /* Array of names of signals, indexed by signal number, for (re)use as the first
669 argument to a signal handler. Only one block of memory is allocated for
670 both psig_name and psig_ptr. */
671 PERLVAR(I, psig_name, SV **)
673 #if defined(PERL_IMPLICIT_SYS)
674 PERLVAR(I, Mem, struct IPerlMem *)
675 PERLVAR(I, MemShared, struct IPerlMem *)
676 PERLVAR(I, MemParse, struct IPerlMem *)
677 PERLVAR(I, Env, struct IPerlEnv *)
678 PERLVAR(I, StdIO, struct IPerlStdIO *)
679 PERLVAR(I, LIO, struct IPerlLIO *)
680 PERLVAR(I, Dir, struct IPerlDir *)
681 PERLVAR(I, Sock, struct IPerlSock *)
682 PERLVAR(I, Proc, struct IPerlProc *)
685 PERLVAR(I, ptr_table, PTR_TBL_t *)
686 PERLVARI(I, beginav_save, AV *, NULL) /* save BEGIN{}s when compiling */
688 PERLVAR(I, body_arenas, void *) /* pointer to list of body-arenas */
691 #if defined(USE_ITHREADS)
692 PERLVAR(I, regex_pad, SV **) /* Shortcut into the array of
694 PERLVAR(I, regex_padav, AV *) /* All regex objects, indexed via the
695 values in op_pmoffset of pmop.
696 Entry 0 is an SV whose PV is a
697 "packed" list of IVs listing
698 the now-free slots in the array */
699 PERLVAR(I, stashpad, HV **) /* for CopSTASH */
700 PERLVARI(I, stashpadmax, PADOFFSET, 64)
701 PERLVARI(I, stashpadix, PADOFFSET, 0)
704 #ifdef USE_REENTRANT_API
705 PERLVAR(I, reentrant_buffer, REENTR *) /* here we store the _r buffers */
708 PERLVAR(I, custom_op_names, HV *) /* Names of user defined ops */
709 PERLVAR(I, custom_op_descs, HV *) /* Descriptions of user defined ops */
712 PERLVARI(I, perlio, PerlIOl *, NULL)
713 PERLVARI(I, known_layers, PerlIO_list_t *, NULL)
714 PERLVARI(I, def_layerlist, PerlIO_list_t *, NULL)
717 PERLVAR(I, utf8_idstart, SV *)
718 PERLVAR(I, utf8_idcont, SV *)
719 PERLVAR(I, utf8_xidstart, SV *)
720 PERLVAR(I, utf8_perl_idstart, SV *)
721 PERLVAR(I, utf8_perl_idcont, SV *)
722 PERLVAR(I, utf8_xidcont, SV *)
724 PERLVAR(I, sort_RealCmp, SVCOMPARE_t)
726 PERLVARI(I, checkav_save, AV *, NULL) /* save CHECK{}s when compiling */
727 PERLVARI(I, unitcheckav_save, AV *, NULL)
728 /* save UNITCHECK{}s when compiling */
730 PERLVARI(I, clocktick, long, 0) /* this many times() ticks in a second */
732 /* Hooks to shared SVs and locks. */
733 PERLVARI(I, sharehook, share_proc_t, Perl_sv_nosharing)
734 PERLVARI(I, lockhook, share_proc_t, Perl_sv_nosharing)
736 # define PERL_UNLOCK_HOOK Perl_sv_nosharing
738 /* This reference ensures that the mathoms are linked with perl */
739 # define PERL_UNLOCK_HOOK Perl_sv_nounlocking
741 PERLVARI(I, unlockhook, share_proc_t, PERL_UNLOCK_HOOK)
743 PERLVARI(I, threadhook, thrhook_proc_t, Perl_nothreadhook)
745 /* Can shared object be destroyed */
746 PERLVARI(I, destroyhook, destroyable_proc_t, Perl_sv_destroyable)
749 PERLVARI(I, signalhook, despatch_signals_proc_t, Perl_despatch_signals)
752 PERLVARI(I, isarev, HV *, NULL) /* Reverse map of @ISA dependencies */
754 /* Register of known Method Resolution Orders.
755 What this actually points to is an implementation detail (it may change to
756 a structure incorporating a reference count - use mro_get_from_name to
757 retrieve a C<struct mro_alg *> */
758 PERLVAR(I, registered_mros, HV *)
760 /* Compile-time block start/end hooks */
761 PERLVAR(I, blockhooks, AV *)
763 /* Everything that folds to a given character, for case insensitivity regex
765 PERLVARI(I, utf8_foldclosures, HV *, NULL)
767 /* List of characters that participate in folds (except marks, etc in
768 * multi-char folds) */
769 PERLVARI(I, utf8_foldable, SV *, NULL)
771 PERLVAR(I, custom_ops, HV *) /* custom op registrations */
773 PERLVAR(I, Xpv, XPV *) /* (unused) held temporary value */
775 /* name of the scopes we've ENTERed. Only used with -DDEBUGGING, but needs to be
776 present always, as -DDEBUGGING must be binary compatible with non. */
777 PERLVARI(I, scopestack_name, const char * *, NULL)
779 PERLVAR(I, debug_pad, struct perl_debug_pad) /* always needed because of the re extension */
781 /* Hook for File::Glob */
782 PERLVARI(I, globhook, globhook_t, NULL)
784 /* The last unconditional member of the interpreter structure when 5.18.0 was
785 released. The offset of the end of this is baked into a global variable in
786 any shared perl library which will allow a sanity test in future perl
788 #define PERL_LAST_5_18_0_INTERP_MEMBER Iglobhook
790 #ifdef PERL_IMPLICIT_CONTEXT
791 PERLVARI(I, my_cxt_list, void **, NULL) /* per-module array of MY_CXT pointers */
792 PERLVARI(I, my_cxt_size, int, 0) /* size of PL_my_cxt_list */
793 # ifdef PERL_GLOBAL_STRUCT_PRIVATE
794 PERLVARI(I, my_cxt_keys, const char **, NULL) /* per-module array of pointers to MY_CXT_KEY constants */
798 #if defined(PERL_IMPLICIT_CONTEXT) || defined(PERL_DEBUG_READONLY_COW)
799 /* For use with the memory debugging code in util.c. This is used only in
800 * DEBUGGING builds (as long as the relevant structure is defined), but
801 * defining it in non-debug builds too means that we retain binary
802 * compatibility between otherwise-compatible plain and debug builds. */
803 PERLVAR(I, memory_debug_header, struct perl_memory_debug_header)
806 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
807 /* File descriptor to talk to the child which dumps scalars. */
808 PERLVARI(I, dumper_fd, int, -1)
812 #ifdef DEBUG_LEAKING_SCALARS
813 PERLVARI(I, sv_serial, U32, 0) /* SV serial number, used in sv.c */
816 PERLVARA(I, sv_consts, SV_CONSTS_COUNT, SV*) /* constant SVs with precomputed hash value */
818 #ifdef PERL_TRACE_OPS
819 PERLVARA(I, op_exec_cnt, OP_max+2, UV) /* Counts of executed OPs of the given type.
820 If PERL_TRACE_OPS is enabled, we'll dump
821 a summary count of all ops executed in the
822 program at perl_destruct time. For
823 profiling/debugging only. Works only if
824 DEBUGGING is enabled, too. */
827 PERLVAR(I, random_state, PL_RANDOM_STATE_TYPE)
829 PERLVARI(I, dump_re_max_len, STRLEN, 60)
831 /* For internal uses of randomness, this ensures the sequence of
832 * random numbers returned by rand() isn't modified by perl's internal
834 * This is important if the user has called srand() with a seed.
837 PERLVAR(I, internal_random_state, PL_RANDOM_STATE_TYPE)
839 /* If you are adding a U8 or U16, check to see if there are 'Space' comments
840 * above on where there are gaps which currently will be structure padding. */
842 /* Within a stable branch, new variables must be added to the very end, before
843 * this comment, for binary compatibility (the offsets of the old members must
845 * (Don't forget to add your variable also to perl_clone()!)
846 * XSUB.h provides wrapper functions via perlapi.h that make this
847 * irrelevant, but not all code may be expected to #include XSUB.h.